What's your native language's most bizarre phrase/idiom?

English has some pretty bizarre phrases and idioms, such as "tickled pink", "keep your eyes peeled", and "SNNNEEEEEEEEEEEEEEERRRRRRRRRRGHHHHHHHHHGGHGHGHG OH GOD WHY OH GOD WHY SNNNNNNNEEEEEEEEEEEEEEEERRRRRRRRRRRRRRRRRRGGGGGGGGGGGGGHHHHHHHHHH", but other languages certainly have some too! What ones does your first tongue have, ones that confuse you even to this day? For example, phrases that are completely abstract or counter-intuitive to the point of being funny, or idioms that make even less sense than making no sense. Answer away!

Naturally, this question is primarily posed to people who don't speak English as a first language.

In Mexico, you can say "chinga a tu madre" to someone, meaning "go fuck your mother".

Now the comeback for this is really bizarre. You reply: "la tuya en vinagre me la cojo en el aire". This is meant to rime, but when you translate it literally means: "I'm fucking your mother in a jar of vinegar... in the air".

It's why you shouldn't tap the "shave-and-a-haircut" rhythm on a car horn in Mexico, because the cadence matches the "chinga tu madre" syllables - - unless you want to get yanked out of your car and beaten.

When you're asking too many personal questions in Finland, there's a response that means, "Stop digging blood out of my nose!" And it's only like four syllables or so. Finns are highly picturesque in their swear words.

French isn't my native language, but an expression for 'to faint' is 'tomber dans les pommes', which means fall into the apples. I picture someone picking apples who falls out of the tree. For mind your own business you can say 'ce ne sont pas tes oignons', = those aren't your onions. Along the same lines, 'sono cavoli miei' in Italian means they are my cabbages. These are the ones that immediately come to mind.